13851018 has 24 divisors (see below), whose sum is σ = 30323748. Its totient is φ = 4568832.

The previous prime is 13850999. The next prime is 13851029. The reversal of 13851018 is 81015831.

13851018 is a `hidden beast` number, since 138 + 510 + 18 = 666.

13851018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13593969 + 257049 = 3687^2 + 507^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13850982 and 13851000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2221 + ... + 5712.

Almost surely, 2^13851018 is an apocalyptic number.

13851018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13851018 is an abundant number, since it is smaller than the sum of its proper divisors (16472730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13851018 is a wasteful number, since it uses less digits than its factorization.

13851018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8038 (or 8035 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 13851018 is about 3721.6955813177. The cubic root of 13851018 is about 240.1562524162.

Adding to 13851018 its reverse (81015831), we get a palindrome (94866849).

The spelling of 13851018 in words is "thirteen million, eight hundred fifty-one thousand, eighteen".